A long time ago, I had asked this question about whether a Battle Master fighter with Extra Attack can do a Commander's Strike after he throws a net. It got answered in the negative (you can't give something you can't take yourself).
However, a very interesting comment sprouted from it:
Can you forgo an attack to use Commander's Strike before throwing a net?
The Extra Attack feature states:
Beginning at 5th level, you can attack twice, instead of once, whenever you take the Attack action on your turn.
The description of the net's special weapon property states:
When you use an action, bonus action, or reaction to attack with a net, you can make only one attack regardless of the number of attacks you can normally make.
The Battle Master fighter's Commander Strike maneuver (PHB, p. 74) says:
When you take the Attack action on your turn, you can forgo one of your attacks and use a bonus action to direct one of your companions to strike.